According to Experian plc who performs analysis on fraud attacks, the 91733 ZIP code is a very dangerous place to be shipping your product. The lucky owners of this ZIP code are the residents of South El Monte, California. In fact, three of the top ten riskiest ZIP codes are in California. Florida owns five of the ten, all of which are in or around Miami. Experian also warns shippers to watch any location that is near large ports of entry because these location allow easy transfer of stolen goods.